On September 19 of the fifth year of Chongzhen, King Lu's caravan encountered bandits on the way to Juzhou, and a total of 154 people from the palace Zhan were killed, none of them were spared, and all the property they carried was robbed!

After the news came out, a major earthquake was triggered in the officialdom of the two prefectures of Qingzhou and Gunzhou!

Yang Bo's words are very leisurely, his level is too small, the earthquake in the officialdom has nothing to do with him, Maojiatun is constantly passing by every night, heading to the official road of the cross slope, Yang Bosuo surnamed removed the toll station, so as not to cause any trouble.

According to the news from Andong Wei, the eyes of Qinggon Erzhou were attracted by the bandits, and the Lu Wangfu even let out the words, without more than five hundred bandits, they couldn't eat their fully armed caravan at all, and they didn't think about the possibility of black eating black, but there were only a handful of military tuns near Juzhou that could pull out a team of more than five hundred people, and as for a small military tun like Maojiatun, they didn't even have the interest to think about it.

In the end, their eyes were fixed on several forces, the bandits in Dafu Mountain, the horse thieves in Daxiangshan, the Wenxiang Sect is also possible, and there is something like Jianglong, as for the news from Li Chuang's side, it is still being verified, in short, the officialdom of the two states is panicked and suspicious of each other......

Mao Jiatun didn't leave too many hand tails, all the seizures were taken by Chen Bilian to sell the stolen goods, Haikou has many stolen goods shops with it, and there is more than one place, Chen Bilian went to Haizhou, which is already the boundary of Jiangsu.

The only thing to worry about is those women and children, Yang Bo assigned the homeless children to the name of each household, Maojiatun provided maintenance expenses, and the others set up another house in the artisan household camp and settled down temporarily.

It's just that a few military families who died in the war have to suffer some grievances, and they are buried secretly, and they will not mourn secretly, and they will talk about it when they have the opportunity to talk about it later......

Yang Bo shook his head and pulled his thoughts back, Chen Jianghu's progress is gratifying, three mortars have been produced at present, and the research and development of granular gunpowder has become Yang Bo's most urgent task at present.

If you travel to the primitive society, it is estimated that Yang Bo doesn't even know what the proportion of gunpowder is, but this era has a lot of mature experience in the study of firearms, which is not inferior to other powers, what Yang Bo did was just to find them out, and use the knowledge of later generations to keep the false and true, that's all, it can be said that Yang Bo has stood on the shoulders of giants.

In the account of granular gunpowder, he found two sentences,

The first sentence is Qi Jiguang's "New Book of Ji Xiao", Volume 15, Putrajaya's Illustrated Diagram of the Crafting Birds: "One tael of yellow and one coin and four cents of willow charcoal." ”

Then there is the prescription for making gunpowder: "Each ingredient uses five catties of nitrate, one catty of yellow, and one catty of eggplant ash." The above nitrate, yellow, ash a total of seven catties, divided into three troughs, fixed grinding 5,500 degrees, out of the trough. Three catties of each medicine, one catty of good soju, into mud, still in the trough, and then grind hundreds of times, out of the trough. Mix into grains, such as the size of yellow rice or mung bean, and it must be put into the palm of people's hands without feeling the heat. One pound of ordinary medicine, half a pound of this medicine should be used, because of the rapid drug power, it should not be used more. If there is no eggplant ash, wicker can also be peeled and knotted, and if there is no willow in the south, the front, cedar and the tree can be. ”

It is still recorded in the prescription for making gunpowder: "You can only test it when you have all the work to do it." It's not hot in your hands, so it's not very hot. If the research time is not enough, the nitrate yellow rolls into fine beads, and the fire door must be pasted if the fire door is not closed, although it is useless to pound. If the time is not enough, the smoke and flames will be smoking, and it will not be light, although it will be useless. If the research and pounding work is complete, it will naturally be turbid, not only the scum will be clean, but the breath will also be gone. In addition, the barrel is smooth and unhindered, even if it is finally lifted and released, there is no other risk. Over the years, I have tried it myself, and there have been experiments, but it is not a rambling......"

Yang Bo put down the book, rubbed his swollen eyes, and paced in the study.

According to his understanding, the so-called granular gunpowder is to make gunpowder burn evenly, and the purpose is nothing more than three:

First, due to the different sizes of gunpowder raw materials, bumpy transportation, long-term storage, etc., there will be layered imagination, the most common is that the sulfur will all sink to the ground, and granularization can solve this problem, and the soldiers who use granulated gunpowder no longer need: "shake before drinking".

Second, traditional gunpowder needs to leave a little space for the barrel or gun barrel to fully burn the gunpowder, while granulated gunpowder does not need to consider this problem, just compact it directly, and the gap between the particles has been reserved. (There is no need to worry about the air, the decomposition of potassium nitrate will release oxygen, which will make charcoal and sulfur burn violently)

The third is that the charge of the original gunpowder is uncertain, even if the amount of pre-filled gunpowder is the same, due to the uneven gunpowder resulting in different gas propulsion after combustion, which makes the maker misjudge, increase or decrease the amount of charge, and finally lead to insufficient explosion and firing range, particle gunpowder does not need to manually control this amount, saving the production time.

In general, granular gunpowder can greatly improve the reliability of the gun, burn more fully, and at the same time, the blockage of the gun pipe may be reduced, the reloading speed will be faster, and the range can be increased a lot.

All Yang Bo can do is to find a way to mix some copper oxide or something, and then make it into a porous crutche.

It doesn't take too many people to make granular gunpowder, and Maojiatun's reserves are only 600 catties.

Came to the craftsman camp, Chen Jiangtou with a group of people busy with the grinding of the mortar cannon, this one is just annealed, the diameter of the gun is smooth, the weight is only a hundred catties, two men can easily carry it away, the diameter of the inner gun is 30 cm, the length of the gun tube is about twice the caliber, you can adjust the elevation angle to solve the problem of firing angle, it is more suitable to call it a smoothbore gun, Yang Bo waited for the test shot surrounded by everyone, he decided to set up a "smoothbore artillery battalion" in the future, the combat objectives are divided into siege, fortress stay, coastal defense, etc.

Chen Jiangtou ordered people to knock the wooden sleeper into the gap under the muzzle, which was used to adjust the landing point of the projectile, whether it could hit the target a hundred steps away depended on the skill of the crew, and the entire mortar was placed on an iron plate with a grooved groove to offset the recoil when firing.

Chen Jiangtou was very dissatisfied with the idea that the target distance of two hundred and fifty steps to three hundred steps proposed by Lord Yang, Yang Bo actually had no bottom in his heart, the mortar cannon was different from others, the chamber pressure of the cannon barrel was very low, and it basically relied on projectile, although he made particle gunpowder, but black powder is those few raw materials, and it is impossible to increase the power too much, as for modern gunpowder? Yang Bo pessimistically estimated that it would be impossible for him to do it in this life......

A few days ago, this batch of four gun barrels has passed the test of sabotage surname experiment, the specific method is to fill the gun barrel with gunpowder, put it in a safe place, ignite it with a long fuse, after detonating the gun barrel may rush to a height of dozens of meters, and wait for the inspection after falling, if there are no cracks, gaps, damage, that is completely passed the assessment, this gun barrel is said to be used after the future will have no trouble, fortunately, Yang Bo designed the iron mold pouring method to produce the four mortar gun barrels have withstood the test.

The two craftsmen skillfully cleaned the barrel, put in the gunpowder, used the fuse to stick out of the fire door, and finally put in the projectile, and added cork chips around the projectile to fill the gap.

"Peng!"

After a loud bang, a large puff of smoke rose into the sky, if ten mortar cannons were fired at once, I was afraid that I would not be able to see things clearly within a radius of five hundred meters, Yang Bo didn't have time to care about this problem now, he ran up to see the launch distance of the solid projectile.

"My lord" An apprentice ran up with a sandy head: "The actual measurement is about one hundred and fifty steps."

Yang Bo was silent, he had already tried to improve the place, but this firing distance still did not change much, and it was far from the three hundred steps he expected, you must know that in the face of the threat of cavalry within one hundred and fifty steps, the trained gunner can only fire once, and three hundred steps can be fired twice, don't underestimate the gap this time, the consequences are completely different, assuming that these mortars are all used with flowering shells......

"Your Excellency?" Xiao Mochou whispered behind him: "If there are several teams of this mortar in the rear of my salt protection team, then it can deal a huge blow to the enemy who is attacking in front of you."

Yang Bo nodded, Xiao Mochou was clever and saw the plan in his heart, but the research and development of the iron-shelled flowering bomb was far away, and it would take a long time for the smoothbore artillery battalion to take shape.

"In this way," Yang Bo said to Tie Niu: "Arrange a few big joint exercises, the salt protection team is divided into two teams, you and Mo Chou each lead a team, divide the fire team and the spear team, and practice the method of cooperation."

Xiao Mochou was a little surprised: "The firecrackers are not equipped yet, how can they practice?" ”

"Replace it with a stick, and if you finish shooting the gun and reload the action, you will be qualified, and write a report, and I will consider what steps need to be simplified"

Xiao Mochou nodded, now Yang Bo attaches great importance to these reports, the last time the cross slope ambush, he also specially arranged a post-war review, for the analysis and improvement of the problems that appeared, an ordinary military household had the audacity to put forward the issue of the unification of the order of the salt protection team, and was immediately appreciated by Yang Bo and was promoted to the team leader, and then, he and the new team leader were worried, because the adults instructed the two of them to come up with a solution within a time limit......

But Xiao Mochou is very happy, because the Maojiatun salt guard team is getting stronger and stronger, the battle of the cross slope, killing nearly 100 people of the fierce ambulance team, and only thirteen of them were killed in the battle, it can be said that looking at the Ming Dynasty, I haven't heard that Juntun can do this, as Yang Bo's henchman, Xiao Mochou's heart is full of pride

"He Jiu, you form another team, and you also have to participate in joint training, your task is to reconnoitre, harass, prevent the two wings, and make a reserve" Yang Bo can't help it, now there are not enough people, so you can only put up the shelf first, and then there will be talents who are good at singing.

The test-fired mortar unsurprisingly deviated from the target, but the range has been improved somewhat, and now Chen Jianghu can safely increase his productivity......

was discussing the room, but saw Han Yan'er coming over.

Everyone was silent, after the adults came back last time, they didn't punish Han Yan'er, and Han Yan'er didn't seem to have happened, but everyone felt in their hearts that it seemed that adults had some estrangement from Han Yan'er......

"My lord, Lord Wang sent someone to fly to the horse quickly, saying that he was going to the Anton Guardhouse after the soldiers were prepared for Dao Yan, and he indicated that he wanted the lord to go in person."

"Oh?" Yang Bo was stunned when he heard this, why is Yan Kunzhi looking for him?

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Tonight, my wife said that she wanted to go out to celebrate, and it would be another chapter, and she would resume the two watches tomorrow